铬酸，是一种无机化合物，化学式为H2CrO4。 2017年10月27日，世界卫生组织国际癌症研究机构公布的致癌物清单初步整理参考，铬（6价）化合物在1类致癌物清单中。 [4] 铬酸只能存在于水溶液中，若从水溶液中把它析出，则立即分解为铬酐和水。 铬酸具有强氧化性。 与糖、纤维、苯、乙醇、双氧水接触会剧烈反应，甚至引起燃烧。 空气中铬酸含量的测定：样品经滤器收集后，用硫酸溶解，加二苯卡巴肼后用比色法测定 ( NIOSH法)。 水中铬酸含量的测定：样品经萃取后用 …

Chromic acid may also refer to the molecular species, H2CrO4 of which the trioxide is the anhydride. Chromic acid features chromium in an oxidation state of +6 (and a valence of VI or 6). It is a strong and corrosive oxidizing agent and a moderate carcinogen. Molecular chromic acid, H2CrO4, in principle, resembles sulfuric acid, H2SO4.

2023年1月23日 · Chromic acid, H 2 CrO 4, is a strong acid and a reagent for oxidizing alcohols to ketones and carboxylic acids. For fairly mundane reasons owing primarily to safety and convenience, chromic acid tends to be made in the reaction vessel as needed (through addition of acid to a source of chromium), rather than being dispensed from a bottle.

(9) Molecular chromic acid, H2CrO4, has much in common with sulfuric acid, H2SO4 as both are classified as strong acids. Chromic acid was widely used in the instrument repair industry, due to its ability to "brighten" raw brass. A chromic acid dip leaves behind a …

CAS号查询致力于为化学行业用户免费提供h2cr2o4的CAS号、中文名称、英文名称相互转换服务,同时也包括h2cr2o4的性质、化学式、分子结构、密度、熔点、沸点等信息。

2011年6月7日 · H2O2（-1）+H2CrO4（+6）——Cr (OH)3（+3）+H2O+O2（0.

2011年6月3日 · Here’s the thing: Chromic acid, H 2 CrO 4, is a strong acid and a reagent for oxidizing alcohols to ketones and carboxylic acids.

Chromic Acid is a naturally occurring oxide with the formula H 2 CrO 4. Chromic Acid is also called Tetraoxochromic acid or Chromic (VI) acid. It is usually a mixture made by adding concentrated sulphuric acid (H 2 SO 4) to a dichromate which consists of a variety of compounds and solid chromium trioxide.

To be balanced, every element in H2Cr2O4 + NaOH = H2O + Na2Cr2O4 must have the same number of atoms on each side of the equation. When using the inspection method (also known as the trial-and-error method), this principle is used to balance one element at a time until both sides are equal and the chemical equation is balanced.

2023年7月19日 · 铬酸的化学式是H2CrO4。 它由两个氢原子、一个铬原子和四个氧原子组成。 该式代表了铬酸在分子水平上的组成。 铬酸的摩尔质量可以通过添加其组成元素的原子质量来计算。 铬的原子质量为 51.996 克每摩尔，氢的摩尔质量为 1.008 克每摩尔，氧的摩尔质量为 16.00 克每摩尔。 因此，铬酸的摩尔质量约为118.00克每摩尔。 铬酸没有明显的沸点，因为它在加热时会分解，释放出氧气。 然而，其分解温度约为 190°C (374°F)。 加热时，铬酸会发生化学反应， …